Using the a portion of the H2O–NaCl phase diagram to answer problem
a. At what temperature is salt no longer useful in causing ice to melt?
b. Determine the solubility limit of salt in water at 0 oC
c. Specify the number of degrees of freedom for 10 wt% NaCl – 90 wt% H2O at -5 oC, -17 oC, and -27 oC
Homework Answers
a) tenmpeatue below -22o C salt and ice in equillibrium with each other and salt is no longer useful in melting ice
b) at 0o C the parallel line which touches NaCl curve the composition corresponds to 36.5 percent therefore 36.5 grams of NaCl soluble in 100 ml water
b) -5o C two phase salt + liquid
-17o C two phase sal + liquid
-27o C two phse salt+ ice
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Using the a portion of the H2O–NaCl phase diagram to answer
problem
a. At what temperature...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within the a liquid phase region. If the composition of the a phase is 10 wt% Sn, determine: a. The temperature of the alloy b. The composition of the liquid phase c. What is the maximum solubility of Sn in a and Pb in B? d. What is the eutectic composition for the Pb-Sn system? Composition (at% Sn) 0 20 40 60 80 100 327°C...
In the Al-Cu phase diagram, determine what phases are present in the binary areas (white area). D...
In the Al-Cu phase diagram, determine what phases are present
in the binary areas (white area).
Determine all the phase transformations happened in the
following phase diagram.
For a 20 wt% Cu alloy at 500 oC, determine: The phases
present
The phase compositions
The fraction of each phase
Draw microstructure of this alloy at 700 oC, 560 oC and 300
oC.
We are interested to design an alloy with heat treatable
characteristics. Please suggest a composition range and explain
why?...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within the a+ liquid phase region. If the composition of the a phase is 10 wt% Sn, determine: The temperature of the alloy 275°C b. The composition of the liquid phase a. c. What is the maximum solubility of Sn in a and Pb in B? Sna = 18.3% Pog: 2.2 % d. What is the eutectic composition for the Pb-Sn system? Sn = 61.9%...
A magnesium-lead alloy of mass 9.7 kg consists of a solid α phase that has a...
A magnesium-lead alloy of mass 9.7 kg consists of a solid
α phase that has a composition just slightly below the
solubility limit at 300°C (570°F). The magnesium-lead phase diagram
is shown in Animated Figure 10.20.
(a) What mass of lead is in the alloy?
kg
(b) If the alloy is heated to 400°C (750°F), how much more lead may
be dissolved in the α phase without exceeding the
solubility limit of this phase?
wt%Pb = (m_Pb + m_add /...
1. The figure below is a binary Magnesium-Lead Phase diagram. Assuming you start with 100 g...
1. The figure below is a binary Magnesium-Lead Phase diagram. Assuming you start with 100 g of alloy at 50 wt% Lead at 500C, answer the following questions (put all of your lines for full credit): a. Report the maximum solubility of lead in magnesium and its temperature; b. Report the maximum solubility of magnesium in lead and its temperature; c. Identify the point on the phase diagram associated with the temperature and composition given in the problem statement and...
6. (4 pts) Answer the following using the phase diagram for H2O below a. At a...
6. (4 pts) Answer the following using the phase diagram for H2O below a. At a constant pressure of 1 atm, what phase change occurs when water is heated from-20 °C to 20 °C? b. At a constant temperature of 34 °C, what phase change occurs when the pressure is reduced from 1 atm to 0.005 atm? c. Does the boiling point of water increase or decrease as the pressure is changed from 1 atm to 200 atm? d. Use...
3. On Silver-Copper phase diagram, label the liquidus line, eutectic point, and all unlabeled regions. Also...
3. On Silver-Copper phase diagram, label the liquidus line, eutectic point, and all unlabeled regions. Also answer questions below a. How many phases are there? b. What is the eutectic temperature? c. What is the eutectic concentration (in mass percent)? d. What is the composition of the Ag in the solid solution at the eutectic temperature? e. What is the composition of the Cu in the solid solution at the eutectic temperature? f. At 600°C what is the composition of...
please answer question asap....thanks NaNO3 Сасі, KNO3 KCr2O7 Solubility (g of salt in 100 g H20)...
please answer question asap....thanks
NaNO3 Сасі, KNO3 KCr2O7 Solubility (g of salt in 100 g H20) Pb(NO3)2 KCI NaCl KCIO3 0 Cez(SO23 10 20 30 40 50 60 70 80 90 100 Temperature (°C) Based on the associated solubility chart, at what temperature would you need to heat a solution of KCl to dissolve 60.0 g of KCl in 120.0 g of H2O?
1. Below is the phase diagram of Pb-Sn alloy. (a) Describe what happens to a 20%-Pb 80%-Sn alloy as temperature decreas...
1. Below is the phase diagram of Pb-Sn alloy. (a) Describe what happens to a 20%-Pb 80%-Sn alloy as temperature decreases from 300 °C to 50 °C; use sketches as needed. (b) When temperature is kept constant at 200 °C, describe what happens as the Sn concentration is increased from 10 wt% to 90 wt%; use sketches as needed. 100% Liquid Procutectic α 24% Eutectic α Liquid 76% Eutectic β Alloy I Alloy 2 Liquid 49% 327 Liquidus 300 Liquid...
300 The phase diagram of Sn-Bi is shown in the figure. 250 Liquid (a) What is...
300 The phase diagram of Sn-Bi is shown in the figure. 250 Liquid (a) What is the solubility of Sn in Bi? (5 points) 200- (b) A Sn-Bi alloy (30% Bi) is cooled from 180 "C to just below the eutectic temperature. What is the mass fraction of primary B (10 points) L+B 150- (Sn) 58% 20% (Bi) 100 B (c) For the same alloy in (b), what is the mass fraction of the eutectic microstructure? (10 points) 50- 0+...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within the a liquid phase region. If the composition of the a phase is 10 wt% Sn, determine: a. The temperature of the alloy b. The composition of the liquid phase c. What is the maximum solubility of Sn in a and Pb in B? d. What is the eutectic composition for the Pb-Sn system? Composition (at% Sn) 0 20 40 60 80 100 327°C...
In the Al-Cu phase diagram, determine what phases are present
in the binary areas (white area).
Determine all the phase transformations happened in the
following phase diagram.
For a 20 wt% Cu alloy at 500 oC, determine: The phases
present
The phase compositions
The fraction of each phase
Draw microstructure of this alloy at 700 oC, 560 oC and 300
oC.
We are interested to design an alloy with heat treatable
characteristics. Please suggest a composition range and explain
why?...
14. Use the lead-tin phase diagram (below). A Sn-Pb alloy is heated to a temperature within the a+ liquid phase region. If the composition of the a phase is 10 wt% Sn, determine: The temperature of the alloy 275°C b. The composition of the liquid phase a. c. What is the maximum solubility of Sn in a and Pb in B? Sna = 18.3% Pog: 2.2 % d. What is the eutectic composition for the Pb-Sn system? Sn = 61.9%...
A magnesium-lead alloy of mass 9.7 kg consists of a solid
α phase that has a composition just slightly below the
solubility limit at 300°C (570°F). The magnesium-lead phase diagram
is shown in Animated Figure 10.20.
(a) What mass of lead is in the alloy?
kg
(b) If the alloy is heated to 400°C (750°F), how much more lead may
be dissolved in the α phase without exceeding the
solubility limit of this phase?
wt%Pb = (m_Pb + m_add /...
1. The figure below is a binary Magnesium-Lead Phase diagram. Assuming you start with 100 g of alloy at 50 wt% Lead at 500C, answer the following questions (put all of your lines for full credit): a. Report the maximum solubility of lead in magnesium and its temperature; b. Report the maximum solubility of magnesium in lead and its temperature; c. Identify the point on the phase diagram associated with the temperature and composition given in the problem statement and...
6. (4 pts) Answer the following using the phase diagram for H2O below a. At a constant pressure of 1 atm, what phase change occurs when water is heated from-20 °C to 20 °C? b. At a constant temperature of 34 °C, what phase change occurs when the pressure is reduced from 1 atm to 0.005 atm? c. Does the boiling point of water increase or decrease as the pressure is changed from 1 atm to 200 atm? d. Use...
3. On Silver-Copper phase diagram, label the liquidus line, eutectic point, and all unlabeled regions. Also answer questions below a. How many phases are there? b. What is the eutectic temperature? c. What is the eutectic concentration (in mass percent)? d. What is the composition of the Ag in the solid solution at the eutectic temperature? e. What is the composition of the Cu in the solid solution at the eutectic temperature? f. At 600°C what is the composition of...
please answer question asap....thanks
NaNO3 Сасі, KNO3 KCr2O7 Solubility (g of salt in 100 g H20) Pb(NO3)2 KCI NaCl KCIO3 0 Cez(SO23 10 20 30 40 50 60 70 80 90 100 Temperature (°C) Based on the associated solubility chart, at what temperature would you need to heat a solution of KCl to dissolve 60.0 g of KCl in 120.0 g of H2O?
1. Below is the phase diagram of Pb-Sn alloy. (a) Describe what happens to a 20%-Pb 80%-Sn alloy as temperature decreases from 300 °C to 50 °C; use sketches as needed. (b) When temperature is kept constant at 200 °C, describe what happens as the Sn concentration is increased from 10 wt% to 90 wt%; use sketches as needed. 100% Liquid Procutectic α 24% Eutectic α Liquid 76% Eutectic β Alloy I Alloy 2 Liquid 49% 327 Liquidus 300 Liquid...
300 The phase diagram of Sn-Bi is shown in the figure. 250 Liquid (a) What is the solubility of Sn in Bi? (5 points) 200- (b) A Sn-Bi alloy (30% Bi) is cooled from 180 "C to just below the eutectic temperature. What is the mass fraction of primary B (10 points) L+B 150- (Sn) 58% 20% (Bi) 100 B (c) For the same alloy in (b), what is the mass fraction of the eutectic microstructure? (10 points) 50- 0+...
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